State Route 65 over Best Slough
Yuba County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- State Route 65 over Best Slough in Yuba County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1915 and reconstructed in 1975, making it 110 years old at the 2025 inventory.
- It carries about 25,000 vehicles a day (traffic count year 2010).
- Its listed owner is the state highway agency.
- It is one of 52 of the 127 inventoried bridges in Yuba County rated good (40.9%); 9 (7.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (39.03542, -121.46386)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 125 ft |
| Location | 03-yub-065-3.55 |
| NBI structure number | 16 0003 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Yuba County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| State Route 70 over Feather River Blvd | 1956 | 37,500 | Good |
| State Route 70 over Yuba River UP RR Spur | 1960 | 37,500 | Good |
| State Route 70 over W70-beale Road Off-ramp | 1956 | 37,500 | Fair |
| State Route 70 over First Street | 1960 | 37,500 | Good |
| State Route 65 over Grasshopper Slough | 1915 | 25,000 | Fair |
| State Route 65 over Dry Creek | 1915 | 22,000 | Good |
All bridges nearby: Yuba County, CA bridge conditions · every bridge in Yuba County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.